The Blue Dasher (Pachydiplax longipennis) is a common dragonfly species found near freshwater habitats throughout North America. It is often called the black-tailed skimmer due to its dark abdomen tip and characteristic flight behavior.
Identification
Adult blue dashers have wingspans of approximately 2 inches. Males display bright blue bodies with black-tipped abdomens, while females are typically brown with striped patterns.
Distribution and Habitat
This dragonfly occurs widely across North America near ponds, lakes, wetlands, and slow-moving streams.
Life Cycle and Behavior
Like other dragonflies, the species undergoes incomplete metamorphosis including egg, aquatic nymph, and adult stages. Nymphs live underwater and feed on mosquito larvae and other aquatic insects.
Pest Status
Blue dashers are beneficial predators that help control insect populations such as mosquitoes.
Prevention
No prevention is required because dragonflies are beneficial insects.
Control
Control is not recommended since these insects contribute to natural pest management.